Metal Side-Member Ground Layout for Multi-Antenna Isolation
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Solution Overview
Problem
In electronic devices with multiple antennas, securing isolation between antennas in a limited space is challenging, leading to reduced radiation performance due to interference and suboptimal resonance formation in desired frequency bands.
Innovation Solution
The electronic device incorporates a housing structure with a metal side member and a printed circuit board, where conductive portions are connected to separate ground paths, physically separating the ground parts to minimize interference and enhance radiation efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple antennas are implemented in a limited area, then wireless communication services can be provided across multiple frequency bands, but isolation between antennas is difficult to secure leading to reduced radiation performance
Solution Approach 1:
The ground part is divided into multiple independent ground parts, each corresponding to a specific antenna. This segmentation allows each antenna to have its own dedicated ground path, thereby securing isolation between antennas while maintaining multiple frequency band support capabilities
Solution Approach 2:
The patent introduces a vertical dimension by extending ground parts in the thickness direction of the housing. This dimensional change allows ground parts to be positioned at different heights, creating physical separation and isolation between antennas without increasing the horizontal footprint area
2Adaptability or versatility
If multiple antennas are implemented in a limited area, then multi-band wireless communication is enabled, but interference between antennas occurs due to insufficient isolation
Solution Approach 1:
The ground part is segmented into multiple independent ground parts, each dedicated to a specific antenna. This segmentation creates separate ground paths that prevent interference between antennas while enabling multiple wireless communication services
Solution Approach 2:
The patent introduces a conductive member as an intermediary element that connects ground parts to the housing structure. This intermediary provides a controlled path for ground connections while maintaining isolation between different antenna systems
3Adaptability or versatility
If multiple antennas are implemented in a limited area, then frequency band expansion is achieved, but resonance formation in desired frequency bands becomes suboptimal
Solution Approach 1:
The ground part is divided into multiple independent ground parts, each optimized for specific resonance characteristics. This segmentation allows each antenna to form optimal resonance in its desired frequency band without being affected by other antennas
Solution Approach 2:
The patent modifies the physical parameters of ground parts, including their position, size, and shape, to optimize resonance formation. By adjusting these parameters, each antenna can achieve optimal resonance characteristics in its target frequency band
Data Source
AI summary
An electronic device is provided. The electronic device includes a housing including a first plate, a second plate, and a side member, a metal structure of which a part is connected to the side member, and a printed circuit board. The side member includes a first conductive portion, a second conductive portion, a third conductive portion, a first segment formed between the first conductive portion and the second conductive portion, and a second segment formed between the first conductive portion and the third conductive portion. The first conductive portion is connected to a first ground part disposed on the printed circuit board through a first path, and is connected to a second ground part disposed on the metal structure through a second path spaced from the first path by a specific distance.